Takotsubo Cardiomyopathy and Stress-Induced Myocardial Dysfunction

Takotsubo cardiomyopathy, often termed stress-induced myocardial dysfunction or “broken heart syndrome”, is characterised by transient left ventricular wall motion abnormalities that mimic acute coronary syndrome yet occur in the absence of obstructive coronary disease. Typically precipitated by intense emotional or physical stress, it predominantly affects post-menopausal women but may occur in both sexes. Pathophysiologically, a surge of catecholamines leads to direct myocardial injury, microvascular dysfunction and autonomic imbalance. Advances in multimodal imaging, including echocardiography, magnetic resonance and positron emission tomography, have revealed not only reversible contractile stunning but also longer-term structural and metabolic remodelling. Although acute recovery of ventricular function is common, emerging evidence indicates persistent myocardial metabolic reprogramming, subclinical fibrosis and heightened risk of recurrent events. Clinical presentation ranges from chest pain and dyspnoea to cardiogenic shock, and complications may include arrhythmias, thromboembolism and left ventricular outflow tract obstruction. Management remains largely supportive, focusing on haemodynamic stabilization, avoidance of inotropic agents in obstructive variants and treatment of precipitating triggers. Despite its initially benign reputation, long-term morbidity and mortality rival those of acute coronary syndromes, underscoring the need for early recognition, tailored follow-up and novel therapeutic interventions targeting metabolic and inflammatory pathways.

Research from Nature Portfolio

Recent studies employing an experimental rodent model have challenged the notion of full reversibility in stress-induced cardiomyopathy. Using integrated in vivo imaging and longitudinal proteomic analyses, researchers demonstrated that a single pharmacological stressor provokes sustained alterations in glucose metabolism, leading to progressive structural damage and irreversible decline in contractile performance. These findings underscore the importance of early metabolic stabilisation and suggest that interventions aimed at normalising cardiac energy utilisation could mitigate long-term sequelae.

Takotsubo Cardiomyopathy and Stress-Induced Myocardial Dysfunction publication trend

The graph below shows the total number of articles in takotsubo cardiomyopathy and stress-induced myocardial dysfunction across all publications each year (not limited to Nature Index journals).

Technical terms

Takotsubo cardiomyopathy: A transient syndrome of left ventricular dysfunction triggered by acute stress, characterised by regional wall motion abnormalities without obstructive coronary lesions.

Catecholamine surge: A rapid increase in stress hormones (adrenaline, noradrenaline) that can induce direct myocardial injury and microvascular dysfunction.

Metabolic reprogramming: A shift in cardiac energy substrate utilisation, notably impaired glucose handling and altered fatty acid oxidation, leading to sustained myocardial dysfunction.

Left ventricular ejection fraction (LVEF): The proportion of blood expelled from the left ventricle during each contraction, expressed as a percentage, and used to assess systolic function.

Cluster analysis: A statistical method that groups patients by shared characteristics (e.g. hormone levels) to identify distinct prognostic phenotypes.

References

1. Acute stress induces long-term metabolic, functional, and structural remodeling of the heart. Nature Communications (2023).
2. Takotsubo syndrome outcomes predicted by thyroid hormone signature: insights from cluster analysis of a multicentre registry. EBioMedicine (2024).
3. Structural and Functional Brain Changes in Acute Takotsubo Syndrome. JACC Heart Failure (2023).
4. Epidemiology, pathogenesis, and management of takotsubo syndrome. Clinical Autonomic Research (2017).